Teledyne 200EH/EM - page 42

Getting Started Teledyne API - Model 200EH/EM Operation Manual
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3.3.2. BASIC O2 SENSOR CALIBRATION PROCEDURE
If your instrument has an O2 sensor option installed that should be calibrated as well.
3.3.2.1. O2 Calibration Setup
The pneumatic connections for calibrating are as follows:
Calibrated N2
at HIGH Span Concentration
Calibrated O2
at 20.8% Span
Concentration
Source of
SAMPLE GAS
Removed during
calibration
MODEL
200EH/EM
SAMPLE
EXHAUST
PUMP
VENT
3-way
Valve
Manual
Control Valve
VENT here if input
is pressurized
Figure 3-14: O2 Sensor Calibration Set Up
O2 SENSOR ZERO GAS: Teledyne Instruments’ recommends using pure N2 when calibration the zero point of
your O2 sensor option.
O2 SENSOR SPAN GAS: Teledyne Instruments’ recommends using 21% O2 in N2 when calibration the span
point of your O2 sensor option.
3.3.2.2. O2 Calibration Method
STEP 1 – Set O2 span gas concentration :
Set the expected O2 span gas concentration.
This should be equal to the percent concentration of the O2 span gas of the selected reporting range (default
factory setting = 20.8%; the approximate O2 content of ambient air).
04521C (DCN5731)